Auxiliary valve for internal-combustion engines.



G. F. 'BOYER.

. AUXILIARY VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED 1AN.1,.19H- RENEWED MAR. 22. i918.

1 ,2?,39@ Patented May 28,1918.

@FKQQ GEORGE FREDRICK BOYER, OF LIMA, OHIO, ASSIGNOR OF TWENTY-FOUR AND ONE- HALF ONE-HUNDREDTI-IS TO DAVID W. DORRIS AND TWENTY-FOUR AND ONE- HALF ONE-HUNDREIDTHS TO EUGENE M. BUSHONG, BOTH OF LIMA, OHIO.

AUXILIARY VALVE FOR INTERNAL-COMBUSTION ENGINES.

Patented May 28, 1918.

Serial No. 224,050.

1,267,369. Specification of Letters Patent.

Application filed January 16, 1917, Serial No. 142,687. Renewed March 22, 1918.

F ig. 3 is a longitudinal section through 55 To all whom it may concern.

the auxiliary valve, showing the ports out F. BOYER,

Be it known that I, GEORGE a citizen of the United States, residing at Lima, in the county of Allen and State of Ohio, have invented certain new and useful Improvements in Auxiliary Valves for Internal-Combustion Engines, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to an auxiliary valve for internal combustion engines, and has for its principal object the production of a device which .will intermittently permit air to be drawn into the intake manifold of an internal combustion engine so as to allow this air to mix with the gas passing from the carbureter for increasing the power of the gas, thus saving fuel and also preventing the formation of carbon within the cylinders.

Another object of this invention is the production of an auxiliary valve for internal combustion engines which is so constructed as to intermittently operate due to the pulsations of the engine so that as the valve operates it will intermittently allow air to pass into the intake manifold of an engine.

Another object of this invention is the production of an auxiliary valve for internal combustion engines wherein the cup valve is slidably mounted within the casing so that ports formed in the cup valve and in the casing will normally be out of registry, although upon the reciprocal movement of the cup valve due to the suction within the intake manifold of an engine, the ports will be moved into registry for permitting charges of air to be drawn into the auxiliary valve, and then drawn into the intake manifold of the engine.

With these and other objects in view this invention consists of certain novel combinations, constructions, and arrangements of parts as will be hereinafter fully described and claimed.

In the accompanying drawing Figure 1 is a detail perspective view of the auxiliary valve, showing the same mounted upon the intake manifold of an engine.

Fig. 2 is a central longitudinal section through the auxiliary valve, showing the ports in registry for permitting air to pass into the auxiliary valve.

of registry, as is the case when the engine is not running.

Fig. 4: is a vertical section through the auxiliary valve, taken on the line l4l of Fig. 2, looking in the direction of the arrows.

Fig. 5 is a longitudinal sectional view through a slightly modified form of the auxiliary valve.

Fig. 6 is an end elevation of the outer end of this modified form.

F i 7 is a vertical section taken on the line -7 of Fig. 5.

Fig. 8 is an enlarged transverse section through the modified form looking toward the inner end thereof.

Referring to the accompanying drawing by numerals it will be seen that the valve casing 1 is preferably cylindrical and has an inner wall 2 from which extends the externally threaded hollow neck 3. This neck 3 is threaded into the intake manifold 4 of an engine for permanently supporting the auxiliary valve in position. It will further be seen that the casing 1 is provided with oppositely arranged ports 5, while the annular shoulder 6 is formed within the casing 1 at the inner end of the neck 3.

The hollow sleeves 7 are formed integral upon thesides of the casing 1 and these sleeves 7 are provided with open ends as shown clearly in Figs. 2 and 3. These sleeves 7 are also provided with side ports 8 formed in alinement with the ports 5 formed in the side'of the casing 1. The cup valve 9 is provided with a closed outer end 10 from which extends the ears 11, which ears 11 have openings 12 formed therein. This cup valve 9 extends into the casing 1 and conforms substantially to the contour of the inner portions of the casing 1 so as to freely reciprocate within this casing when the auxiliary valve is in operation. This valve 9 is also provided with alined ports 13 for purposes to be hereinafter set forth.

The cylindrical Dlungers 14 have reduced externallythreaded stems 15 extending from their forward ends and these stems 15 pass through the openings 12 formed in the ears 11 of, the cup valve. The binding nuts 16 are threaded upon the stems 15, as shown clearly in Figs. 2 and 3 so as to bear upon the outer surface of the ears 11 for firmly holding thev stems 15 of the plungers 14: in alinelnent with the ears of the cup valve 9. These plungers 14. are cylindrical so as to fit within the sleeves 7 whereby the plungers are allowed to freely reciprocate within these sleeves, as will be hereinafter fully described. These plungers 14 are provided with annular grooves 17 formed adjacent their inner end-s, whereby as the plunger-s are reciprocated within the sleeves 7 the grooves 17 will come into alinement with the ports for permitting air to pass into the auxiliary valve.

A boss of a circular nature, as shown at 18, is formedupon the inner surface of the closed end 10 of the cup valve 9, while a coil spring 19 is positioned within the auxiliary valve 50 as to bear upon the inner surface of the closed end 10 of the cup valve, surrounding the boss 18 thereof, and hearing at its opposite end upon the shoulder formed upon the inner surface of the wall 2, and at the inner end of the externally threaded neck It will be seen that the tension of this coil spring 19 normally urges the cup valve in an outwardly extending direction with respect to the casing 1. The outward movement of this cup valve 9 is limited, however, by the screws 20 which are carried upon the casing 1 extending inwardly from this casingfsoas to p ro ect into the short slots 21 formed in the side of the cup valve 9, as shown in and 4. Since the screws will bear normally upon the inner ends of these slots 21 will be seen that the outward movement of the cup valve will be limited.

When this auxiliary valve is in use the neck 3 is threaded into engagement with the intake manifold 1 of an eiigine, as above set forth. The tension of the coil spring 19 will cause the cup valve to be urged outwardly, thus causing the ports 13 of the cup valve and the annular grooves 17 of the plungers let to be out of alinement with the ports '5 and 8. When an engine runing, however, it is well known that the pulsations of the engine are intermittent, caused by the intermittent explosions within the cylinders of the engine, and, consequently, the suction of gas through the intake manfold 1 will be at intermittent intervals. When, however, the charge of gas is sucked through the intake manifold 4', a partial vacuum will be caused within the inte-rior of the auxiliary valve. This suction,

causecl'by the vacuum, will cause the cup valve to be sucked inwardly into the casing 1' against the tension of the coil spring 19. Their the cup valve is moved forwardly,

however, fora short distance, it will be seen that the plungers 14L will also be moved inwardly into the sleeves 7, as shown clearly valve will move into registery with the ports 5. Therefore, a free passage is provided for air through the ports and the valves into the interior of the cup valve. The suction. caused by the partial vacuum within the cup valve 9 will permit a considerable quantity or charge of air to be drawn into the cup valve, whereby the vacuum will be overcome, thus causing the tension of the spring to return the cup valve and plungers to their normal positions, thus cutting off the passage of air through the ports to the grooves, whereby the various ports and grooves will be moved out of registry, as shown in Fig. The charge of air sent into the cup valve 9, however, will be drawn through the hollownecl: 3 into the intake manifold 1 of the engine to mix with the gas passing through this intake manifold. As is well known, the provision -o f a small quantity of air in the intake manifold of an engine to mix with the gas passing from the carbureter of the engine to the cylinders will make an explosive charge of a more combustible nature and 'of' more power, thus reducing the cost of the fuel, necessary to increase the power of the ,engine, while the injection of air will also tend to prevent the formation of carbon deposits within the cylinders of the engine. The operation of the engine will cause a continuation of rapidly moving charges of gas pass,- ing through the intake manifold into the cylinders of the engine. These rapid charges causing the intermittent pulsations will produce intermittent vacuums very rapidly within the cup valve and as a con,- sequence, the cup valve and plun ers will be caused to reciprocate by these intern ittent suctions and the tension of the coil spring so as to allow small quantities of air to be intermittently sucked into the auxiliary valve and then drawn into the manifold of the engine to mix with the gaspassing" therethrough.

It will be seen that by having the plunger s carried by the cup valve and reeiprocally mounted within the sleeves the cup valve will be positively held against 'any" rotary movement and as a consequence the cup valve will be held so as to reciprocate at all times in a direct line so as to cause the ports to register. If the plungers and sleeves were not provided, the cup valve Would naturally rotate, although such movement might be very slow within the casing so as tolc ause' the portsto be out of registry even when the cup valve is reciprocated. However, this objectionable action is positively prevented by the provision of the plungers and sleeves and their operation as hereinbefore described.

By referring to Figs. 5 to 8 inclusive it will be seen that a slightly modified form of auxiliary valve has been provided wherein. the casing 22 is elongated and has a closed end 23, while the cap 24; fits upon the opposite end of the casing 22 for closing the same. Before the cap 24 is placed upon the end of the casing 22 the coil spring 25 is interposed within the casing 22, fitting against the inner closed end 23 of the casing. The hollow .externally threaded neck 26 extends from the closed end 23 of the casing 22 to permit the casing to be carried upon the intake manifold of an engine, by the threading of the neck 26 into engagement with the intake manifold. The cup valve 27 is reciprocally mounted within the casing 22 and has a central wall 28. An annular flange 29 extends from the outer end of the cup valve 27, as shown clearly in Fig. 5. A second coil spring 30 is positioned Within the casing 22 so as to bear upon the wall 28 fitting within the flange 25), while the opposite end of this coil spring 30 bears upon the inner surface of the cap 24. The cap is threaded upon the casing 22 as indicated at 31 and thus holds the springs in adjusted positions Within the easing. This cap 24 is provided with an opening 33 so as to prevent the compression of air or the maintenance of a vacuum within the casing adjacent the end in which the coil spring 30 is carried.

This cup valve- 27 is provided with ports 34 which register with the ports 35 formed in the packing strip 36 which fits within the grooves 37 of the cup valve 27. It will also be seen that the casing 22 is provided with a number of ports 38 extending therethrough which are adapted to register with the ports 32L andv35 as the cup valve is reciprocated within the casing 22.

When this modified form of the auxiliary valve is in operation it will be seen that it is carried upon the intake manifold of an engine similar to the manner in which the preferred form of the invention is mounted thereon. As the engine is running and drawing charges of gas through the intake manifold it is obvious that partial vacuums will be caused within the inner end of the casing 22. These intermittent suctions will cause the cup valve to be moved against the tension of the spring 25, while the spring 30 will also expand, thereby causing the ports 38 to register with the ports 34 and 35, thus allowing a charge of air to pass into the interior of the casing 22 from whence the air charge may be passed through the neck 26 into the manifold of the engine. As soon as this vacuum or suction within the inner end of the casing 22 is overcome by the passing of air thereinto, as above stated, the tension of the spring 25 will again return the cup valve to its normal position, thereby allowing the ports 34 and 35 to move out of registry with the port-s 38 for preventing the continuous passage of air into the valve casing. It will be seen that the reciprocation of the cup valve will not be hindered due to the compression of air or the maintenance of a vacuum within the outer end of the casing 22, for this air will pass into the outer end of the casing very freely through the opening 23 formed in the cap 24. Therefore, the operation of this modified form of the auxiliary valve is in all respects similar to the preferred form.

It will be seen by referring particularly to Fig. 2 that even when the ports and grooves are registered with each other a small space is still left within the inner end of the cup valve and the inner surface of the wall 2 and the valve casing 1. As a con sequence, it is obvious that if the engine is running with too much power or force and it is not desired to allow the air charges to be drawn into the intake manifold the increased suction within the intake manifold will cause the cup valve to be moved to one end near the wall 2, thus causing the ports and grooves to be moved out of registry and retained in this position until the increased charges Within the intake manifold are reduced. It is further obvious that by having the stems eXtending through the ears and the positioning of the nuts 16 thereon the plungers are held in adjusted engagement with the ears so as to permit the plungers to be adjusted when necessary for causing the grooves thereof to positively register with the ports 8 of the sleeves 7 and the ports 5 of the casing 1 when the ports 13 of the cup valve are in registry with the ports 5.

It will further be noted that a nut l is formed upon the casing 1 for facilitating its rotation when the threaded neck is being screwed into engagement with the intake manifold of an engine.

From the foregoing description it will be seen that a very simple and eflioient auxiliary valve has been provided for internal combustion engines which is adapted to be mounted upon the intake manifold of the engine so as to cause the drawing of the gas through the intake manifold to cause intermittent vacuums within the valve casing, whereby the cup valve will be reciprocated so as to cause the ports to be moved into registry with each other, thereby allowing intermittent charges of air to be drawn into the auxiliary valve and then drawn from the auxiliary valve into the engine, after which action the cup valve will be returned to its normal position by the pressure of the coil spring, thereby 0, using the ports to move out of registry and thus prevent a continuous stream or jet of air from being drawn into-the auxiliary valve.

The sleeve 32 is rotatably mounted upon the valve casing 22 and is limited in vits movement by .means of the pin 32 which projects into the groove 22 formed in the casing 22. This sleeve 32 is provided with ports 32 which register With the ports in the casing and when so desired Will permit a ctull amount of air to pass into the valve casing. It is obvious that by the adjustment of this sleeve, the amount of :air which is forced into the valve casing may be .regulated so that if it is desired, the supply may be cut ofi" altogether.

What is claimed is 1. Ina valve of the class described, the combination of a casing, a cup valve reciprocally mounted within said casing, means for urging said cup valve in one direction, sleeves formed upon said casing, plungers adjustably mounted upon said cup valve and reciprocally mounted Within said sleeves, said sleeves, casing and cup valve having ports, said 'plungers having annular grooves, whereby said plungers and sleeves Will hold said cup valve against rotary movement vior causing said ports and grooves [to positively register at intermittent intervals, and said .plungers being adapted to be adjusted upon said cup valve so as to permit varying amounts of registration of said ports and grooves at intermittent intervals.

2. In ;a valve of the class described, (the oombinationof a casing, sleeves formed upon said casing, a cup valve reciprocally mounted Within said casing and having ears extending outwardly therefrom, plungers reciprocallyimounted Within said sleeves, stems formed upon said plungers and projecting through said 'ears, means for retaining said stems in adjustment With said ears, means it'or normally urging said cup valve in one direction, said sleeves, casing and cup valve having ports, said plungers having annular grooves, whereby as said cup-valve is reciprocally moved, said ports and grooves will come. into intermittent registry, said plungers being adapted to be adjusted upon said ears so as to limit the period of time the ports and grooves are'in registry, thus regulating the amount of air drawn into said valve.

In testimony whereof I hereunto 'aifix my signature.

GEORGE FREDRIOK BOYER.

9o 1 thin patent may he obtained 101' Me seen-ts each, by addressing the Commissioner of ritual.

Washington, D. 0. 

